Seat or similar article



FIG. 1 is a front perspective view of a seat showing the design in the form of a sofa;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a front perspective view of the design shown in the form of a loveseat; and

FIG. 4 is a front perspective view of the design in the form of an armchair. 

The ornamental design for a seat or similar article, as shown and described. 